<template>
  <div class="login_container">
    <!-- <div class="block">
      <span class="demonstration">默认 Hover 指示器触发</span>
      <el-carousel height="500px">
        <el-carousel-item v-for="item in 4" :key="item">
          <h3 class="small">{{ item }}</h3>
        </el-carousel-item>
      </el-carousel>
    </div> -->
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <!-- ref能直接获取到表单的引用 -->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 登录表单的数据绑定对象
      loginForm: {
        username: "admin",
        password: "123456",
      },
      loginFormRules: {
        // required:true代表必填项
        username: [
          { required: true, message: "请输入名字", trigger: "blur" },
          { min: 3, max: 12, message: "长度在3到12个字符", trigger: "blur" },
        ],

        password: [
          { required: true, message: "请输入正确的密码", trigger: "blur" },
          { min: 6, max: 18, message: "长度在6到18个字符", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    login() {
      // validate(boolean,object)  一般这个布尔值用valid来写
      // 返回值是promise则需要用async awit解析
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post("login", this.loginForm);
        // console.log(this);
        // console.log(res);
        if (res.meta.status !== 200) {
          return  this.$message({
          showClose: true,//是否显示关闭按钮
          message:"Fuck You",
          center:true,
          duration:800,
          type:'error'
        });
        }
        this.$message({
          showClose: true,//是否显示关闭按钮
          message:"盖亚！！！！",
          center:true,
          duration:800,
          type:'success'
        });
        // console.log(res);
        window.sessionStorage.setItem('token',res.data.token)
        this.$router.push('/home')
      });
    },
    // 重置
    resetLoginForm() {
      // console.log(this);
      this.$refs.loginFormRef.resetFields();
    },
  },
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: rgba(0, 0, 0, 0.5);
  background-image: url(../assets/wd.gif);
  background-repeat: no-repeat;
  background-size: cover;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.5);
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: rgba(0, 0, 0, 0.5);
    }
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: center;
}

// .el-carousel__item h3 {
//     color: #475669;
//     font-size: 14px;
//     opacity: 0.75;
//     line-height: 150px;
//     margin: 0;
//   }

//   .el-carousel__item:nth-child(2n) {
//      background-color: #99a9bf;
//   }

//   .el-carousel__item:nth-child(2n+1) {
//      background-color: #d3dce6;
//   }
</style>
